Hopkinsons Test on DC Machine: This is a regenerative test in which two identical dc shunt machines are coupled mechanically and tested simultaneously. One of the machines is made to act as a motor driving…
Gas Discharge Plasma Display | Nixie Tubes - Symbolic Representation: Gas Discharge Plasma Display - These are the most well-known type of alphanumeric Plasma Display. Their operation is based on the emission of light in…
Illumination Engineering Interview Questions and Answers: 1. What are the advantages of artificial lighting produced electrically ? Ans. Artificial lighting produced electrically have the advantages of cleanliness, ease of control, reliability, steady output as well…
Transistor approximation (Ideal, Second and Higher): An NPN transistor is shown in Fig. 10.71 (a). Voltage appearing across the emitter diode is denoted by VBE and that appearing across the collector-emitter terminals is denoted by…
Voltage Regulation of Transmission Line: Voltage Regulation of Transmission Line is defined as the rise in voltage at the receiving-end, expressed as percentage of full load voltage, when full load at a specified power factor…
Power Measurement in Single Phase Circuit by Wattmeter: Wattmeters are generally used to measure power in the circuits. A wattmeter principally consists of two coils, one coil is called the current coil, and the other…
Two Dimensional Motion in a Uniform Electric Field: Two Dimensional Motion in a Uniform Electric Field - Let us consider that an electron enters the region between two parallel plates of a parallel plate capacitor…
Difference between I/O Mapped I/O and Memory Mapped I/O: The difference between I/O Mapped I/O and Memory Mapped I/O is given below I/O Mapped I/O - Data transfer between the processor and the input/output devices…
What is Secondary Emission? When a beam of high velocity electrons suddenly strikes a metallic surface, they give up their kinetic energy to electrons and atoms which they strike. Some of the bombarding electrons, called…
Loop Matrix or Circuit Matrix: For a given directed graph, it is always possible to state which branches are involved in the formation of loops or closed circuits or meshes. For a given oriented graph,…
